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Model T940 User Manual
Publication No. 980938 Rev. K
Soft Front Panel Operation 5-12
Astronics Test Systems
DRM Type
Description
Primary
The Primary module must be located in the rightmost slot
position in the VXI chassis relative to the DRM modules
that will be coupled. DSA provides all the timing for the
sequencers that are part of the coupled chain . Two
Primary modes are available:
1. Primary DSA Coupled – DSA coupled to DRS
and DSB independent.
2. Primary DSA and DSB Coupled – DSA and DSB
coupled to DRS chain.
Secondary
The Secondary module(s) are the DRMs located between
the Primary and Terminator modules. Five Secondary
modes exist:
1. Secondary Not Linked - DSA and DSB not linked
and are independent.
2. Secondary Linked - DSA and DSB linked and
independent.
3. Secondary DSA Coupled - DSA coupled to DRS
and DSB independent.
4. Secondary DSB Coupled - DSB coupled to DRS
and DSA independent.
5. Secondary DSA and DSB Coupled - Both DSA
and DSB coupled to the DRS.
Terminator
The Terminator module is the DRM leftmost slot. Five
Terminator modes exist:
1. Terminator Not Linked – DSA and DSB not linked
and are independent.
2. Terminator Linked – DSA and DSB linked and
independent.
3. Terminator DSA Coupled - DSA coupled to DRS
and DSB independent
4. Terminator DSB Coupled - DSB coupled to DRS
and DSA independent.
5. Terminator DSA and DSB Coupled – Both DSA
and DSB coupled to the DRS.
All the selections for the Inter-Module Mode pull-down control are listed below.
Only valid selections are displayed based on the jumper setting:
Table 5-8: Inter-Module Mode Settings
Setting
DSA Control
DSB Control
DRM Type
Independent Not Linked
DSA
DSB
Independent
Independent Linked
DSA
DSA
Independent
Primary DSA Coupled
DRS
DSB
Primary
Primary DSA and DSB Coupled
DRS
DRS
Primary
Secondary Not Linked
DSA
DSB
Secondary
Secondary Linked
DSA
DSA
Secondary
Secondary DSA Coupled
DRS
DSB
Secondary